minecraft-pi-reborn/mods/src/input/attack.c

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#include <libreborn/libreborn.h>
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#include <symbols/minecraft.h>
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#include "../feature/feature.h"
#include "input.h"
// Store Left Click (0 = Not Pressed, 1 = Pressed, 2 = Repeat)
// This Is Set To Repeat After First Attempted Left-Click Build Interaction
static int is_left_click = 0;
void input_set_is_left_click(int val) {
if ((is_left_click == 0 && val == 1) || (is_left_click != 0 && val == 0) || (is_left_click == 1 && val == 2)) {
is_left_click = val;
}
}
// Add Attacking To MouseBuildInput
static int32_t MouseBuildInput_tickBuild_injection(unsigned char *mouse_build_input, unsigned char *local_player, uint32_t *build_action_intention_return) {
// Call Original Method
int32_t ret = (*MouseBuildInput_tickBuild)(mouse_build_input, local_player, build_action_intention_return);
// Use Attack/Place BuildActionIntention If No Other Valid BuildActionIntention Was Selected And This Was Not A Repeated Left Click
if (ret != 0 && is_left_click == 1 && *build_action_intention_return == 0xa) {
// Get Target HitResult
unsigned char *minecraft = *(unsigned char **) (local_player + LocalPlayer_minecraft_property_offset);
unsigned char *hit_result = minecraft + Minecraft_hit_result_property_offset;
int32_t hit_result_type = *(int32_t *) (hit_result + HitResult_type_property_offset);
// Check if The Target Is An Entity Using HitResult
if (hit_result_type == 1) {
// Change BuildActionIntention To Attack/Place Mode (Place Will Not Happen Because The HitResult Is An Entity)
*build_action_intention_return = 0x8;
}
// Block Repeat Changes Without Releasing Left Click
is_left_click = 2;
}
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// Return
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return ret;
}
// Init
void _init_attack() {
// Allow Attacking Mobs
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if (feature_has("Fix Attacking", server_disabled)) {
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patch_address(MouseBuildInput_tickBuild_vtable_addr, (void *) MouseBuildInput_tickBuild_injection);
}
}